Apparatus for absorbing hydrofluoric acid.



.T. J. DYE.

APPARATUS FOR ABSORBING HYDROFLUORIC ACID. APPLICATION I'ILED FEB.21,1911.

1,016,219. I I Patented Jan.30, 1912.

2 SHEETS-SHBBT 1. 1

WITNESSES.

ATTORNEYS J. JL DYE. APPARATUS FOR ABSORBING HYDROFLUORIU ACID.

APPLIOATIQN FILED FEB.21, 1911.

1,016,219, 7 Patented Jan. 30, 1912.

2 SHEETFSHEET 2.

4 $2 5 is- Tia-7 IN VE IV TOR BY 5 W ATTORNEYS Jenn ann'rnao DYE, or ATLANTA, GEORGIA.

APPARATU$ FOR ABSORIBING HYDROFLUORIQ ACID. I

Specification of Letters Batent.

Application filed February 21, 1911.- Serial 116. 610,112.

To all whom it may concern: y t

Be it known that I, dorm J. Dnt'a c1tizen of the United States, and a resident of Atlanta, in the county of Fulton and State of Georgia, have invented a new and Improved Apparatus for Absorbing l-lydrofluoric Acid, of which the following is a full, clear,

' and exact description.

lid

The invention relates tothe manufacture of commercial acid phosphate, and its object is to provide a new and 1m rowed apparatus, designed for condensing t e obnoxious and destructive gases or fumes arising in mixing phosphate rock'with an acid, the apparatus being arranged to convert the gases into solid form and prevent the same from escaping into the atmosphere to the detriment of human beings and vegetation. For the purpose mentioned use is made of a shaft filled with checker work and provided with a water spray for condensing the gases or fumes passing through the shaft, the products of condensation gathering on the checker work.

A practical embodiment of the invention is represented in the accompanying drawings, forming a part of this specification,'in

.which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a sectional side elevation of the apparatus; Fig. 2 .is an enlarged sectional plan view of one corner of a compartment and showing the supporting beams of the wooden racks in front on the corner post; Fig. 3 is a sectional side elevation of the same; Fig. 4 is an enlarged cross section of part of one of the'racks; Fig. 5 is a,,sec tional side elevation of the same; Fig. 6 is an enlarged cross sectionof part of one of the crates;-and Fig. 7 is a sectional side elevation of thesam f The base A is built of brick, concrete or other material, and the top of the base forms a pan A in which-is set a shaft B, preferably provided with a transverse partltlonC terminating a distance from the 'panA and D dividing the shaft B into compartments and D connected with each other at their lower ends at E, as indicated in the drawing. The top of the compartment D is closed and provided with a trap door F, whlle the u per end of the compartment 'D' 1s preferab y extended beyond the top of'the compartment 1D and is open and protected'by a roof G.

Into the upper closed end of the compartment D discharges the discharge pipe VII of beams I.

the compartments D and D.

a suction fan H, having' the inlet pipe H connected with. the bin or bins in which the phosphate rook is-mixed with the acid so that gases or fumes arising from the mixture are drawn out of the bin by the action of the suctionfan H and discharged by'the pipe H into the compartment l), in which the gases or fumes travel ddwnward and then pass by way of the opening E into the lower end of the compartment D to rise .therein.

The compartments D and D are filled above the opening E with checker work I,

preferably made in the form of wooden racks, each consisting of supporting beams I" and parallel bars I removablyheldon Patented Jan. 30,1912.

the supporting beams I, one close to the other, as plainly indicated in the drawing. The supporting beams I are provided with beveled ends I, 'fitting correspondinglyshaped recesses 13 in osts B forming part of the shaft B, and t e bars I are preferably polygonal in cross section'so as to present a large condensing surface to the gases or fumes circulating through the compartments-D and D, as previously explalned. The ends I of the bars I are preferably reduced and are seated in seats I cut int'o the tops of the beams I, to removably hold the" bars I in position on the It is understood that" the wooden racks are arranged one above the other, and alternate pairs of said racks have their supporting beams I and bars I arranged at a right angle, one to the other,

as will be readily understood by reference .to the drawing. Into the upper ends of the compartments D and D extend the perforate lowerends of spraying devices J, J connected with a water supply pipe J 2 leading to a suitable source of water supply, so that the Water is sprayed. in the upper ends of Now when the condenser is in use and the gases or fumes circulate through the compartments and D, .as previously ex lained, and

sprays of water are dischargedinto the com- 'partments then a condensing of the gases or fumes takes place in the said compartments and the products of condensation readily adhere or settle on the checker work I, that is, on the bars I and their supporting beams I. In the upper end of the compartment D below the spraying pipes J are arranged tiers of lattice work or crates K, each formed of spaced'bars K supported on beams K attached to the posts B, similar to the beams I. The lattice work or crates K serve to check the escape of vapors that have not been condensed, it being understood that the gases or vapors which finally pass out of the upper open end of the compartment D are free of obnoxious or detrimental particles. The solid particles which adhere or aredeposited on the checker work I are washed off by the water entering the upper ends of the compartments D and D and pass down into the pan "A' from which leads a pipe L to a well N, preferably arranged in the base A to one side of the shaft B, as indicated inthe drawings. A water discharge pipe 0 extends into the bottom of the well N, and the inlet to the discharge pipe 0 is a distance above the bottom of the well N, so that the solid substances carried by the Water from the pan A into the well N settle therein, while the surplus water overflows into the pipe 0 to be carried toa suitable place of discharge. The inlet end of the pipe L extends a distance above the bottom of the pan A so that asmall amount of water is held in the pan A within the shaft B to form a seal and thus revent leakage of the obnoxious gases or umes from the shaft B at the bottom thereof.

From the foregoin it will be seen that the gases or fumes arlsing from themixing of the phosphate rock with acid in the bins is circulated through the compartments D,

. the open end of the compartment D into D of the shaft B, tion the fumes or sprays of water, or fumes. adhere or are deposited on the checker work I and are washed off the same, to be finally carried to the well N. The vapors or gases which are not condensed can pass through gases are subjected to so as to condense the gases the atmosphere, but as such escaping vapors are harmless no further treatment of the same is necessary.

The water supply pipe J 2 is provided with a valved flushing pipe J 8 above the door F, so that when it is desired to clean the condenser the door F and the valve of the pipe J are opened, so that water can be passed into the-apparatus for flushing purposes.-

Having thus described my invention, I claim as new and desire to secure by Letters Patent:

1. An apparatus of the class described, comprising a base, a shaft on the said base and'having two compartments of unequal height and communicating with each other at their lower ends, the shorter compartments being closed at the top and the longer I one open, a gas supply connected with the said upper closed end of the shorter comendsof thesaid compartments, and chec work in the said compartments.

' partment, spraying devices in the upper er nected with the said upper closed en and during this circula-,

The products of condensation 2. An apparatus of the class described, comprising a base, a shaft on the said base and having a partition extending upwardly a distance from the said base to form two compartments of unequal height connected with each other at their lower ends, one of the compartments being closed at the top and the other being open, a gas supply con- ,spraying devices in the upper ends of the said compartments, checker work in the said compartments, and a erforate arrester in the said upper open end.

apparatus of the class described,

'comfprising a base having a pan at the top, a sha set on the said base andhav' a vertical partition r'eaching'to within h distance from the ,said pan and formin compartments of unequal height connects with each other at their lower ends one of the compartments being open at the to to form an escape for vapors, and the ot er compartment havin 1ts top provided with a door for norma y closing the compartments, means for discharging the ases to be condensed into the upper close end of the latter compartment to cause the gases totravel down in this compartment. and up in the other compartment, wooden checker work held inthe said com artments, and waterspraying devices in the upper ends of the said compartments. e

4. An apparatus of the class described, coin rising a base having a-pan at the top, a shai t set on the said base and havin a vertical partition reaching to within a istance from the said an and formin compartments of unequa height connected with each other at their lower ends one of the compartments being open at the top to form an escape for vapors and the other compart- .ment having its top provided with a door for normally closing the compartment, means for discharging the ases to be condensed-into the upper close end of the latter compartment to cause the gases to travel down in this compartment and up in the other compartment, wooden checker work held in the said compartments, water-spra ing devices in, the 11 per ends of thesald compartments,'and a attice work in the upper 0 en end of the one compartment.

5.. apparatus of 'the' class described, com rising a base having .a pan at the top, a sha set .on the said base and havin a vertical partition reaching to within a istance from the said pan and forming compartments of unequal height connected with each other at their lower ends, one of the compartments being open at the top to form an escape for vapors and protected by a roof and the other compartment having its top provided with a door for normally closing this compartment, means for discharging the gases to be condensed into the upper closed end of the latter compartment, to

cause the gases to travel down in this compartment and up in the other compartment,

pipe leading fiom the'sald pan into the well,

and a Water discharge pipe leading from the Well to carry ofl' the Water and to allow the products of condensation to settle in the 10 Well. 1

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

' JOEL JEATHRO DYE.

,Witnesses:

J. R. WALRAVEN, E. R. MCGLASSON. 

